Sheet-metal calender shell



Patented July 14, 1925.

, UNITED ysiuefrns Parlava-1v1* OFFICE.

JOHN E. JOHNSON, or HARTFORD, CONNECTICUT, ASSIGNOE To THE NEW HAVEN SHEEAEDIZING COMPANY, or" HARTFORD, CONNECTICUT,` AYCOEPOEATION or CONNECTICUT; Y 'i SHEETJMETAL OALENDEE sHELr..

Application le'd March 26, 1925. Serial N'o. 18,371.

To all whom t may concern:

Be it known that I, JOHN E. JOHNSON, a citizen of the United States, residingvat Hartford, in the county of Hartford and State of Connecticut, haveinvented anew and useful Improvement in Sheet-Metal Calendar Shells, of which the following is a specification.

This invention relates ,to lthe construction of cylindrical shells formed from sheet metal of the type which'are especially adapted for winding hot worked fabric, such as.

sheet rubberandthe like into rolls.'

The object of the invention is to'providc an all metal structure of this characterwhich is simple and inexpensive to build and which is light, strong and durable. v

In attaining this end a cylindrical sheet metal outer shell is provided witlran inner longitudinally extending core whichv is formed of sections so assembled that it braces and prevents the shellV from'colla'ps# ing or bending under heavy weights, and at the same time furnishes an angular axial opening for receivingthe shaftby which the structure is supported and rotated, the sections of the core V'being held in position by circular'heads that `have angular openings for the supporting and rotating shaft and that are iitted into the ends of the shell and held securely, so that they cannot tipl and will retain Athe core" sections and strengthen the shell, by forming the edges of the shell overthe rims of theheads. Bracing segments -may'also be located at suitable distances apart in the shell and fitted to the core rsections to further brace the shell and retain the core sections inV position, Or the core sections may be indented or corrugated at intervals to increase'their rigidity. l

In the accompanying drawings Fig. 1'

7 is an end view of one of the `core sections that has been indented to increase itsstiness. Fig. 8` is a face view of the indented core section l l The outervlwall of kthe structure is a cylin-V drical shell vl formed 'of'. sheetmetal.: EX- tending longitudinally throughthe shellis the core 2 `which yis also formed `of sheet metal. This core is made up offour channel-shaped pieces with sloping side walls. The channel piecesare put together `so `that theirbottoms 3V form an angular `Opening of a size and cross sectional shape to receive the usual'shaft by which thestructureis supported and rotated when in use.V The sides4 of the adjacent channels,when` the sections of the core are assembled, fit face to faceand extend. radiali outward such a distancefthat their edges" tagainst the `inner wall of the o uter shell 1 forfnearly `the.

entire length of the shell. kThese channel sections "which make. up the `core may be heldtogether in any desired way. t 1

In each end of the` shell isa-circular head 5 the rim 'of which has a iange .6 Vthat is fitted to the inner 'wall of the shell.. The inner faces of the heads have grooves shaped to receive the ends of the core sections, the length of which core determines the distance apart of thel heads. After the Core' and heads are located inthe outer shell the metal at the ends 7 of the shell is formed over the rimslof the heads so as to tightly secureA the parts in position.y The core sections are'desirably stifi'ened by forming indentations or corrugations l0 at intervals along the :angular bends, as illustrated in Figs. 7 and V8.

For the purpose of furtherstifiening the shell segmental pieces .8 having Viianges 9 at their edges may be located at desired distances along the corebetween the walls of the channels. The/outer ianged edges of kthese segments are shapedto lit the inner wall ofthe outer shell, while the otheredges of the segments are fitted to the openings in the channels which make upthe core. These segmental braces are desirablyV arranged, as shown, in pairs diametrically opposite each other, but with the pairs staggered or arranged ninety degrees from each other. The heads and the segmental braces are perforated, as illustrated, in order to allow ventilation of the interior of the shell.

The channel-shaped pieces which form the shell and prevent it fromollapsingfor bendcore of! this;` strueture arefsimple 'to shape and easy lto assemble. When these section are put together to form thel core theirY bases:y provide theI angulan; axial. opening for the g drving and. supportingy shaft and,A

their sides being placed face to face support each other and form still` Webs that` extend practically the entire length Y'of the ing. The heads hold the ends of the core sections together and.; the core spaces the heads: apart and prevents: them'v from col-- laspsing inward, VWhile the heads strengthen the ends of the shell and arethemselves held in place by the `formed lover; end'sof the shell f which; not only, holdsg'theA elements together but. prevents the heads from; collapsing: outward. The simple*bracingy seg# ments assist'in holding'the core sections `from springing' apart or, buckling, and at ythe same' time theyfstrengthenthe Walls of the shell.

Asi azresultof thel co-operative supporting andbracing: relationof thefseveral parts of this'structur'efarranged asset ortha strong, durable, light calender. shell may be `formed of comparatively thin metal.

TheA invention.v claimed is: v

1. A *calender-shell comprisingza cylindrical outer shell, circular; heads vitted intofthe; ends ofth'e shell, anda core ex-4 tending inthe shell troml the head*to=head;

said core fleeing; formed ofsections assembled to provide an'axiallyfextended opening and Websftliatfextend radially to and arefiitted against the inner Wall; orf-'the outer shell. '2.' AA calender shell comprising ai cylin+ drical: outer shell,j Circular. heads fitted y against .inward movement;` saidcore-havf` insg; lWebs that extendl radiallyfto and; are rfitted againstthe inner Wall ofthe outer shell. n -1 l 4; A calender; shelll comprisinga cylindriclal outer.` shell, circular headsztted into the vends of the shell, and a core extending from head to head in the shell, said core being formedfof. channel-shaped pieces with *theA rsi-des ofthe channels face to V'tace and providing radial Webs thatextenhto and bracethe inner Wall of thevshell 'for sub- "stai'itial'ly itsY length, and the bottoms of the channels furnishing,an angular axial open- A calender shell comprising` a cylin drical- Quter shell,A a coregextending v,surbstantially the length ofl and bracingthe shell on the interior, andl circular heads -iitted into the ends O theshell .against the ends of the core with the ends of,l Lthe shellr formed overt the rimsfoif the-heads and securing the` partstogether. I

:6; A calendar shell comprising, a cylindrical outer shella sectional core -extend-k inglongitudinallyv inxthe shell: andryhaving. radially extendingy vWelosthat engage with t-he inner Wallsfofthe shell, and circular headsittedinto,V the ends ofthe shell,.said heads having inthe inner Walls groove'sffor receiving the' ends of: the core sect-ions.

7.' A calender shell comprising a. cylindrical 'i outer shell, a core formed of troughshaped sectionsthe bottoinslof said. sections forming an. angularopening and the sides of said sectionsforming webs that extend outward r into engagement With. the vv alls of the shell,.and.circular heads fitted into the ends of theshell and engaging the ends of v8. A calender shell comprising. al cylindrical-outer shell, a'Y core formed of longitudinally extending trough-shaped pieces assembled to provide an axial angular kopen# inge-nd` Websthatextend outward into engagement with the 'inner Wall of the shell, segmental bracing members fitting the walls of the trough-shaped core pieces andthe inner' Wall of the shell, and heads .fitted 100 d intothe ends-ofthe shell and engaging the y ends oi'thencore. ,9. A; calender shellV comprising ai cylin' Ld'rical outer shell, a corei formed of Vlongi tudinally extending trough-shaped pieces assembled to provideyanaxial angulariopen` f v ing and radial Webs that extend intoerngigagek ment'Withtheyinnerwall of the shell, and bracing f pieces ttedfat 1intervals. alongv the length offshell tothe Walls ofthe core pieces and innerV Wall ofthe shell;` A Y JOHN E. JOHNSON?, 

